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Here are the 3 A99 models with no Chokes.

Bob, I am matching these 3 - EFHW antennas using the Eznec 40:1 transformer feature at the feed point.

This is not quite the same as the 1/4 wave variable mutual transductance matching that the A99 uses. So, I guess we could say these models are not real A99's, if that make a difference.

Burning the lips coming up. Here are the 3 tuned models with the Choke removed. I was surprised that the patterns and the currents were not that much different, excepting for the model with the 16.4' foot mast.

Can't explain why yet, except to suggest maybe it is the transformer effects.

This is getting deeper into "Questions" than I imagined at the start, but that makes it more interesting to me.

[QUOTE="Marconi, post: 734634, member: 903"] Here are the 3 A99 models with no Chokes. Bob, I am matching these 3 - EFHW antennas using the Eznec 40:1 transformer feature at the feed point. This is not quite the same as the 1/4 wave variable mutual transductance matching that the A99 uses. So, I guess we could say these models are not real A99's, if that make a difference. Burning the lips coming up. Here are the 3 tuned models with the Choke removed. I was surprised that the patterns and the currents were not that much different, excepting for the model with the 16.4' foot mast. Can't explain why yet, except to suggest maybe it is the transformer effects. This is getting deeper into "Questions" than I imagined at the start, but that makes it more interesting to me. [/QUOTE]

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